Cara Black (R) of Zimbabwe holding her son Lachlan and Sania Mirza (L) of India holding their victory trophy, which is a traditional Japanese battledore, pose for photographs after defeating Taiwan's Chan Hao-ching and Liezel Huber of the U.S. during their women's doubles final match at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. (Photo: Reuters)

Mirza-Black Win Pan Pacific Open

Cara Black of Zimbabwe holds her son Lachlan after winning her doubles final match with Sania Mirza of India against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. (Photo: Reuters)

Mirza-Black Win Pan Pacific Open

Sania Mirza (L) of India returns a shot as Cara Black of Zimbabwe looks on during their women's doubles final match against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. (Photo: Reuters)

Mirza-Black Win Pan Pacific Open

Sania Mirza of India (top) returns a shot as Cara Black of Zimbabwe squats during their women's doubles final match against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. (Photo: Reuters)

Mirza-Black Win Pan Pacific Open

Cara Black (L) of Zimbabwe and Sania Mirza of India react after winning match point against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. during their women's doubles final match at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. (Photo: Reuters)

Mirza-Black Win Pan Pacific Open

Sania Mirza of India (top) returns a shot as Cara Black of Zimbabwe squats during their women's doubles final match against Taiwan's Chan Hao-ching and Liezel Huber of the U.S. at the Pan Pacific Open tennis tournament in Tokyo September 28, 2013. (Photo: Reuters)